Measuring and marking instrument.



` J. E. TsCHoP. EEEEEEEE ANDK MARKING INSTRUMENT.

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986,783. Patented Mar.14,'1911'.

. far/2655250@ v UNITED sTATEs PATENT oFF-ICE,

JAMES EDWARD TSCHOP, 0F LEBANON, PENNSYLVANIA.

MEASURING ANI) MARKING INSTRUMENT.

Specification of Letters Ztatent.`

Patented Mar. 14, 1911,

Application iled October 4, 1910. Serial No. 585,195. p

measuring and marking instruments, morel particularly designed for use in connection with circular or cylindrical work, such as shafts and the like, and designed not only to scratch or mark lines and pricks on the cylindrical body, but also to nd the center of the body.

A further object is to provide an improved device of this character which is of exotremely..I simple inexpensive construction,

strong and durable in use.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims.

In the accompanying-drawings: Figure 1, is a perspective View illustratin my imn provements. Fig. 2, is a view in horizontal section through the head offthe instrument, and Fig. 3, is a View in end elevation illustrating my improvements in position to lind the center of a c lindrical body.` l

The body of tlie instrument may be made in various ways, for example, may comprise a single integral casting having iared wings 1, l, constituting an inverted V-shape support for the longitudinal body 2 and the cross head 3 at one end of the' body, and extending Aat right angles thereto. These wings l 1, 1, are adapted to be positioned on the cylindrical work illustrated at 4:, and a levelmay be had'by the water levels 5 and 6 in the head 3, and body 2 respectively, the level 5 operating transverselyand the level 61011- gitudinally. l

, Head 3 is provided in its frontgface with a vertical roove 7inwhich a flat ba/r or marker 8 1s located, saidv groove so positioned that the edge of said marker is in line with the center of the instrument, and themarker is beveled at its lower end as shown at 9 forming a sharp cutting edge which, when the instrument isl drawn along the work, will scratch or mark la line in the.,

work. The head is also provided with a vertically disposed opening 1 0, in whichY a cylindrical rod or pricker 11 is positioned, the lower end of the latter madev conical forming a4 sharp point 12.' The groove and the opening 10, are connected by a hole 13, in which a coiled'spring' 14 is 1o' cated bearing atene end against the marker 11, and against the outer face of said marker 3 bears, and pressing inward against the marker 8, holds the latter and exerts spring tension on thev pricker 11, so that they. are maintained in proper relation to each other and'to the wor or bar 8 may be readily utilized to find the lOngitudinalcenter of the work, and this is accomplished by extending the marker across the end of the work, using the marker as a straight edge to draw a line suchas shown vat 16 across the end 'of the work, and then turning the instrument.and markin another line, Ithe point of crossingofl sai `8, and at its vother end against the pricker' As shown mostclearly in Fig. 3, marker 8, a thumb screw 15 screwed into the head lines being of course the exa-ct center of the v work.

- Various slight changes might be made in the general, form and arrangement of parts described, ,withoutdeparting from my invention, and hence I do not limit myself to the precise details set forth, but conl sider myself at liberty to make such changes and alterations a's falrly vfall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Let-` ters Patent is: Y

1. Inan instrument of the character de-v scribed, the combination with a body, wings ron said body at an angle to each other adapted to support the body on cylindrical work,

and having one'edge in line with the center ofthe body, and its lower end beveled forming a sharp cutting ed e, a pricker supported by said body, sai pricker sup orted in the bodyin rear of the marker, an hav-4 porting wings on the'bodv at an angle to of a marker adjustaioi)l secured to the ,dy

- said body,` a longitudinal level in said body,V

each other, a transverse'head on one end of and a transverse level in said head, .of a marker comprising a bar having a beveled end7 said head having a groove at its outer face to receive said marker and hold it in position to center one edge of the marker,

said head having anopening therethrough back of the marker g'roove, and having-a 'two subscribing Witnesses.' 4

JAMESEDWARD TSCHOP. l v

marker and the pricker respectively, and a thumb screw in the end of said head bearing against said marker, substantially as de- 15 scribed.

In testimony whereof I have signed my f, name to this specification in the presence of g yWitnesses PETER GEIGER,

W. K. Knox. y 

